A high voltage fuse for circuit protection of power distribution equipment

Abstract

The utility model discloses a high voltage fuse for power distribution equipment circuit protection, including chassis, column insulator, fuse tube and the buckle assembly for supporting fuse tube, buckle assembly includes the contact seat fixed mounting in the top of column insulator, the top rotation of contact seat is equipped with the pressure bar, and one end of contact seat is equipped with the limiting hole for accommodating pressure bar, so that the pressure bar is embedded in the limiting hole and is formed with the enclosed space for accommodating fuse tube with contact seat cooperation. The utility model through to the contact seat, pressure bar assembly constitutes the buckle assembly for supporting fuse tube, compared with the bolt fastening, the complex clamp and so on mode that is common in the current fuse tube installation, simple structure, convenient operation, only through the pressure bar rotation embedding limiting hole can complete fuse tube fixation, and the installation and replacement process are greatly simplified, especially in the narrow space of power distribution equipment, the maintenance efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of fuses, specifically a high-voltage fuse for circuit protection of power distribution equipment. Background Technology

[0002] In the circuit protection system of power distribution equipment, high-voltage fuses are key components to ensure the safe operation of circuits. Their core function is to cut off the circuit by melting the fusible element inside the fuse tube when a fault such as overload or short circuit occurs, thus preventing the fault from escalating. Among them, the fuse tube, as the core component of the high-voltage fuse, directly affects the operational stability and maintenance efficiency of the fuse due to the reliability and convenience of its installation and fixing.

[0003] Currently, the installation of fuse tubes in traditional high-voltage fuses mostly employs bolt fastening or complex clamp structures. When using bolt fastening, specific tools are required for the tightening operation, which is not only cumbersome but also severely limits the flexibility of tool operation within the confined installation space inside the power distribution equipment. This results in lengthy installation and replacement times for fuse tubes, impacting the maintenance efficiency of the power distribution equipment circuits. Utility Model Content

[0004] The purpose of this utility model is to provide a high-voltage fuse for circuit protection of power distribution equipment, so as to solve the problem of cumbersome installation and disassembly of conventional high-voltage fuses mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage fuse for circuit protection of power distribution equipment, comprising a base frame, a post insulator, a fuse tube, and a snap-fit ​​assembly for supporting the fuse tube. The snap-fit ​​assembly includes a contact seat fixedly installed on the top of the post insulator. A pressure rod is rotatably installed on the top of the contact seat. One end of the contact seat is provided with a limiting hole for accommodating the pressure rod, so that the pressure rod is embedded in the limiting hole and cooperates with the contact seat to form an enclosing space for accommodating the fuse tube.

[0006] Preferably, the main body of the contact seat is U-shaped and has an arc-shaped segment at the center of both sides. One end of the contact seat is provided with a mounting ear for accommodating the pressure rod, and the pressure rod is rotatably mounted in the mounting ear. The other end of the contact seat extends obliquely with a guide wing, and the limiting hole is located at the center of the guide wing.

[0007] Preferably, the pressure bar is formed in a symmetrically distributed Z-shaped bend structure along its extension direction.

[0008] Preferably, the pressure rod has right-angle sections on both sides of its main body.

[0009] Preferably, both ends of the pressure rod are integrally formed with an arc-shaped structure.

[0010] Preferably, the corners of the contact seat are rounded for a smooth transition.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model assembles a contact seat and a pressure rod to form a snap-fit ​​assembly for supporting the fusible tube. Compared with the bolt fastening and complex clamping methods commonly used in the current installation of fusible tubes, the structure is simple and the operation is convenient. The fusible tube can be fixed by simply rotating the pressure rod to insert it into the limiting hole, which greatly simplifies the installation and replacement process. Especially in the confined space of power distribution equipment, it significantly improves maintenance efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention without the fusion tube installed;

[0015] Figure 3 This is a three-dimensional structural diagram of the first state of the buckle assembly of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the second state of the buckle assembly of this utility model.

[0017] In the diagram: 1. Base frame; 2. Post insulator; 3. Fusible tube; 4. Contact seat; 5. Pressure rod; 6. Mounting lug; 7. Right-angle section; 8. Arc structure; 9. Guide wing; 10. Limiting hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4This utility model provides a technical solution: a high-voltage fuse for circuit protection of power distribution equipment, including a base frame 1, a post insulator 2, a fuse tube 3, and a snap-fit ​​assembly for supporting the fuse tube 3. The snap-fit ​​assembly includes a contact seat 4 fixedly installed on the top of the post insulator 2. A pressure rod 5 is rotatably installed on the top of the contact seat 4. One end of the contact seat 4 is provided with a limiting hole 10 for accommodating the pressure rod 5, so that the pressure rod 5 can be embedded in the limiting hole 10 and cooperate with the contact seat 4 to form an enclosed space for accommodating the fuse tube 3. This can form a stable constraint on the fuse tube 3, preventing the fuse tube 3 from displacing or loosening under the influence of equipment operation, vibration, or external environment (such as wind), and ensuring a stable connection between the fuse tube 3 and the circuit.

[0020] The main body of the contact seat 4 is U-shaped, with arc-shaped segments at the center of both sides. This allows for a closer fit with the cylindrical outer contour of the fusible tube 3. The U-shaped structure itself has a certain elastic deformation space, and combined with the uniform wrapping of the fusible tube 3 surface by the arc-shaped segments, it can reduce local compressive stress on the outer wall of the fusible tube 3 while ensuring fixing strength, thus avoiding damage to the fusible tube 3 caused by rigid contact. One end of the contact seat 4 has a mounting lug 6 for accommodating the pressure rod 5, which is rotatably mounted in the mounting lug 6. The other end of the contact seat 4 extends obliquely with a guide wing 9. The limiting hole 10 is located at the center of the guide wing 9. The corners of the contact seat 4 are all rounded for a smooth transition. The rounded corners eliminate stress concentration points, improve the structural durability of the contact seat 4 under high-pressure environments, and reduce the risk of operators being scratched by sharp edges during installation and maintenance, complying with electrical equipment safety operation specifications. The pressure rod 5 forms a series of symmetrically distributed Z-shaped bends along its extension direction. The Z-shaped bends provide deformation fulcrums for the pressure rod 5, allowing it to achieve controllable deformation at the bends through its own elasticity. This facilitates quick opening and closing during operation and allows it to adapt to changes in the size of the fusible tube 3 or fluctuations in force through deformation, thus balancing the convenience of deformation with structural stability. The pressure rod 5 has right-angle sections 7 on both sides of its main body, and arc-shaped structures 8 are integrally formed at both ends of the pressure rod 5. The arc-shaped structures 8 effectively avoid the risk of scratching during operation.

[0021] This application uses a contact seat 4 and a pressure rod 5 to assemble a snap-fit ​​assembly for supporting the fusible tube 3. Compared with the bolt fastening and complex clamping methods commonly used in the installation of the fusible tube 3, the structure is simple and the operation is convenient. The fusible tube 3 can be fixed by simply rotating the pressure rod 5 to insert it into the limiting hole 10, which greatly simplifies the installation and replacement process. Especially in the confined space of power distribution equipment, it significantly improves maintenance efficiency.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage fuse for circuit protection of power distribution equipment, characterized in that: The device includes a base frame (1), a post insulator (2), a fusible tube (3), and a snap-fit ​​assembly for supporting the fusible tube (3). The snap-fit ​​assembly includes a contact seat (4) fixedly installed on the top of the post insulator (2). A pressure rod (5) is rotatably installed on the top of the contact seat (4). One end of the contact seat (4) is provided with a limiting hole (10) for accommodating the pressure rod (5), so that the pressure rod (5) can be embedded in the limiting hole (10) and cooperate with the contact seat (4) to form an enclosing space for accommodating the fusible tube (3).

2. A high voltage fuse for circuit protection of power distribution equipment according to claim 1, characterized in that: The main body of the contact seat (4) is U-shaped and has an arc-shaped section at the center of both sides. One end of the contact seat (4) is provided with a mounting ear (6) for accommodating the pressure rod (5). The pressure rod (5) is rotatably installed in the mounting ear (6). The other end of the contact seat (4) has a guide wing (9) extending obliquely. The limiting hole (10) is located at the center of the guide wing (9).

3. A high voltage fuse for circuit protection of power distribution equipment according to claim 1, characterized in that: The pressure bar (5) forms a symmetrically distributed Z-shaped bend structure along its extension direction.

4. A high voltage fuse for circuit protection of power distribution equipment according to claim 1, characterized in that: The pressure rod (5) has right-angle sections (7) on both sides of its main body.

5. A high voltage fuse for circuit protection of power distribution equipment according to claim 1, wherein: The two ends of the pressure rod (5) are integrally formed with arc-shaped structures (8).

6. A high voltage fuse for circuit protection of power distribution equipment according to claim 1, characterized in that: The corners of the contact seat (4) are all rounded for a smooth transition.

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